Heat insulation faucet

Abstract

The utility model provides a heat insulation faucet. The heat insulation faucet comprises a shell, a hot water inlet, a cold water inlet and a water outlet, a heat insulation inner pipe is correspondingly sleeved with the shell, and a cold water channel used for being communicated with the cold water inlet is formed by a gap between the outer wall of the heat insulation inner pipe and the inner wall of the shell. The heat insulation inner pipe is provided with a constant-temperature valve element, and water in the hot water inlet and water in the cold water channel enter a mixing cavity of the constant-temperature valve element to form mixed water which further flows into the heat insulation inner pipe. A water outlet hole communicated to the water outlet is formed in the heat insulation inner pipe, and the water outlet hole is used for being connected with mixed water outlet; therefore, a mixed water path used for conveying mixed water is formed in the heat insulation inner pipe, the mixed water can be conveniently discharged at the water outlet hole, internal water path connection is greatly simplified, the mixed water path and other water paths are effectively separated, and expected mixed water can be discharged for a user to use.

Description

Technical Field

[0001] The utility model relates to the technical field of bathrooms, in particular to a heat-insulating faucet. Background Art

[0002] At present, in the faucet with mixed water, its shell is connected to the hot water inlet pipe. When the hot water inlet temperature reaches 65℃, the heat conduction will cause the entire faucet shell to become hot, which is easy to scald the user. In response to this, a heat-insulating faucet structure has appeared on the market, either with a heat-insulating sleeve on the hot water inlet pipe to reduce the heat conducted from the joint and the pipe to the shell, or with an inner core heat-insulating structure inside the faucet to directly thermally isolate the shell from the hot water.

[0003] There is no doubt that the inner core insulation method is obviously superior to other methods. However, at the same time, its shortcomings are becoming increasingly apparent. The water channels in the outer shell are separated by inner tubes, which invisibly creates a great obstacle to the compact connection of the internal water channels.

[0004] In particular, the outlet of the mixed water is isolated in the inner tube, while the cold water needs to form a cold water channel in the gap between the inner tube and the outer shell, which is isolated outside the inner tube. Therefore, it is very easy to make the connection of the internal water channel cumbersome and difficult, which not only increases the additional water channel connection, but also makes it more difficult to achieve convenient outlet of the mixed water. Utility Model Content

[0005] In view of this, an object of the present invention is to provide a heat-insulating faucet to solve the above-mentioned problem.

[0006] The utility model adopts the following scheme:

[0007] The present application provides a heat-insulating faucet, comprising an outer shell, and a hot water inlet, a cold water inlet and a water outlet opened in the outer shell; an insulating inner tube is correspondingly sleeved in the outer shell, and a gap between the outer wall of the insulating inner tube and the inner wall of the outer shell forms a cold water channel for connecting to the cold water inlet; the insulating inner tube is provided with a thermostatic valve core, and water from the hot water inlet and the cold water channel respectively enters into a mixing chamber of the thermostatic valve core to form mixed water and further flows into the insulating inner tube; the insulating inner tube is provided with a water outlet hole connected to the water outlet, and the water outlet hole is used to connect the mixed water outlet.

[0008] As a further improvement, the insulated inner tube is also provided with a water inlet hole directly connected to the cold water channel, and a cold water path connected to the water inlet hole; the cold water path is formed in the insulated inner tube and is separated from the mixed water path in the insulated tube, so as to further implement cold water insulation on at least the mixed water in the insulated inner tube.

[0009] As a further improvement, the heat-insulating inner tube forms a plurality of corresponding water-dividing chambers through an internal "8"-shaped partition, and at least one of the water-dividing chambers is used to connect the thermostatic valve core and the water outlet.

[0010] As a further improvement, it also includes a switching valve core, which is arranged in the heat-insulating inner tube and is used to adjust the opening to connect the mixed water waterway to the water outlet hole accordingly.

[0011] As a further improvement, the thermostatic valve core is arranged on one side of the shell and connected to one end of the thermal insulation inner tube, and the switching valve core is arranged on the other side of the shell and connected to the other end of the thermal insulation inner tube.

[0012] As a further improvement, a stop block, a valve core cover and a base are provided between the thermostatic valve core and the insulating inner tube, and the valve core cover is threadedly connected to the insulating inner tube; and a limit block and a cover member are provided between the switching valve core and the insulating inner tube, and the cover member is threadedly connected to the insulating inner tube.

[0013] As a further improvement, the insulated inner tube is also provided with a hot water inlet hole directly connected to the hot water inlet, and a cold water inlet hole connected to the cold water channel; the hot water inlet hole and the cold water inlet hole are respectively connected to the mixing chamber of the thermostatic valve core, so that the hot water entering from the hot water inlet hole and the cold water entering from the cold water channel are mixed and input into the mixed water waterway in the insulated inner tube.

[0014] As a further improvement, a cold water inlet pipe is provided on the shell corresponding to the cold water inlet, a hot water inlet pipe is provided on the shell corresponding to the hot water inlet, and a water outlet pipe is provided on the shell corresponding to the water outlet; and the water outlet pipe is used to output the mixed water delivered by the thermostatic valve core, or to output the cold water delivered by the cold water inlet pipe.

[0015] As a further improvement, each water inlet is threadedly connected to its corresponding connecting pipe; the axis of the cold water inlet and the axis of the cold water inlet connecting pipe are arranged parallel to each other, and the axis of the hot water inlet and the axis of the hot water inlet connecting pipe are arranged parallel to each other to form a slope connection at the junction.

[0016] As a further improvement, the outer shell and the heat-insulating inner tube are tubular structures of comparable lengths, and the diameter of the outer shell is greater than the diameter of the heat-insulating inner tube.

[0017] By adopting the above technical solution, the utility model can achieve the following technical effects:

[0018] 1. The insulated faucet of the present application can effectively prevent hot water from being transferred to the outer shell and scalding the human body through the cold water channel formed between the insulating inner tube and the outer shell, thereby achieving efficient scalding protection for the entire faucet outer shell, with a simple structure and reliable functions.

[0019] 2. The heat-insulating inner tube is provided with a water outlet hole connected to the water outlet. On the one hand, the mixing chamber of the thermostatic valve core outputs mixed water from the mixing chamber to the water outlet hole after receiving water from the hot water inlet and the cold water channel. On the other hand, the water outlet hole provided in the heat-insulating inner tube can be directly connected to the mixed water, thereby forming a mixed water waterway for transmitting the mixed water in the heat-insulating inner tube, so as to realize convenient water discharge of the mixed water at the water outlet hole, greatly simplify the internal waterway connection, and effectively separate the mixed water waterway from other waterways, so as to achieve the expected mixed water discharge for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a heat-insulating faucet according to an embodiment of the utility model;

[0021] Figure 2 is a cross-sectional view of a heat-insulating faucet according to an embodiment of the utility model;

[0022] Figure 3 is a cross-sectional view of the heat-insulating faucet of the embodiment of the utility model from another perspective;

[0023] Figure 4 It is a schematic structural diagram of the heat-insulating inner tube of the heat-insulating faucet of an embodiment of the utility model;

[0024] Figure 5 yes Figure 4 Schematic diagram of the structure from other perspectives;

[0025] Figure 6 yes Figure 4 Schematic diagram of the structure from another perspective;

[0026] Figure 7 is a schematic structural diagram of the heat-insulating faucet of an embodiment of the utility model from another viewing angle;

[0027] Figure 8 It is a cross-sectional view of the heat-insulating faucet of an embodiment of the utility model under other viewing angles.

[0028] Icons: 1-housing; 11-hot water inlet; 12-cold water inlet; 13-water outlet; 2-insulating inner tube; 21-water outlet; 22-water inlet; 23-partition; 24-hot water inlet; 25-cold water inlet; 3-cold water channel; 4-thermostatic valve core; 41-stop block; 42-valve core gland; 43-base; 5-switching valve core; 51-limit block; 52-gland; 6-hot water inlet pipe; 7-cold water inlet pipe. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0030] Example

[0031] Combination Figures 1 to 8 The present embodiment provides a heat-insulating faucet, comprising a shell 1, and a hot water inlet 11, a cold water inlet 12 and a water outlet 13 provided in the shell 1. A heat-insulating inner tube 2 is correspondingly sleeved in the shell 1, and a gap between the outer wall of the heat-insulating inner tube 2 and the inner wall of the shell 1 forms a cold water channel 3 for connecting the cold water inlet 12. The heat-insulating inner tube 2 is provided with a thermostatic valve core 4, and water from the hot water inlet 11 and the cold water channel 3 respectively enters the mixing chamber of the thermostatic valve core 4 to form mixed water and further flows into the heat-insulating inner tube 2. The heat-insulating inner tube 2 is provided with a water outlet 21 connected to the water outlet 13, and the water outlet 21 is used to connect the mixed water outlet.

[0032] The cold water channel 3 design can effectively reduce the temperature of the housing 1, avoiding the risk of scalding when the user touches the faucet. The thermostatic valve core 4 can accurately control the mixing ratio of hot water and cold water, so that the user can easily adjust the water temperature to the desired level, providing a comfortable water experience.

[0033] Furthermore, the design of the water outlet 21 allows mixed water or direct cold water output to meet water demand in different scenarios. While the cold water flow channel absorbs heat, it can also use this heat to preheat cold water, reducing heat energy loss and improving heat utilization.

[0034] In particular, the thermally insulated inner tube 2 is provided with a water outlet 21 connected to the water outlet 13. On the one hand, the mixing chamber of the thermostatic valve core 4 outputs mixed water from the mixing chamber to the water outlet 21 after receiving water from the hot water inlet 11 and the cold water channel 3. On the other hand, the water outlet 21 provided in the thermally insulated inner tube 2 can be directly connected to the cold water inlet 12, thereby forming a cold water path for transmitting cold water and a mixed water path for transmitting mixed water in the thermally insulated inner tube 2, so as to realize the output of cold water or mixed water at the same water outlet 21, which greatly simplifies the internal water path connection and can achieve the expected switching output of mixed water or cold water to the water outlet 13.

[0035] like Figures 3 to 6 As shown, in this embodiment, the heat-insulating inner tube 2 is further provided with a water inlet 22 directly connected to the cold water channel 3, and a cold water channel connected to the water inlet 22. The cold water channel is formed in the heat-insulating inner tube 2, and is separated from the mixed water channel in the heat-insulating tube, and is used to further implement cold water insulation on at least the mixed water in the heat-insulating inner tube. Therefore, a cold water channel is further provided in the heat-insulating inner tube 2 to perform secondary insulation on the mixed water, greatly reducing the temperature transmitted from the heat-insulating inner tube to the cold water channel 3, and the cold water channel and the cold water channel 3 work together to achieve the purpose of double insulation.

[0036] Specifically, the heat-insulated inner tube 2 is provided with an inner "8"-shaped partition 23 (such as Figure 6 As shown in the figure, a plurality of water-dividing chambers are formed correspondingly, at least one of which is used to connect the thermostatic valve core 4 and the water outlet 21. Among them, the "8"-shaped partition plate 23 corresponds to separating the mixed water waterway that is opposite to each other and penetrates the entire inner tube, and the cold water waterway that is opposite to each other and communicates with each other on the left and right. And the mixed water waterway is connected and matched at one end of the housing 1 through the switching valve core 5 described below.

[0037] like Figure 2 and Figure 3 As shown, in this embodiment, a switching valve core 5 is also included, and the switching valve core 5 is arranged in the heat-insulating inner tube 2, and is used to adjust the opening to connect the mixed water waterway to the water outlet 21. Obviously, the switching valve core 5 is an existing waterway switching valve, which is provided with a rotary switch, and is used to adjust the flow rate of the mixed water output to the water outlet 21.

[0038] Furthermore, the thermostatic valve core 4 is arranged on one side of the outer shell 1 and connected to one end of the heat-insulating inner tube 2, and the switching valve core 5 is arranged on the other side of the outer shell 1 and connected to the other end of the heat-insulating inner tube 2. The thermostatic valve core 4 maintains the set water outlet temperature by adjusting the flow of hot water and cold water in real time. In this embodiment, the thermostatic valve core 4 sets the water outlet temperature at 38°C, and the mixed water outlet can be controlled only after this temperature is reached. In addition, the switch of the switching valve core 5 is correspondingly exposed on the outer shell 1, so that the user can select the water outlet 13 to discharge cold water or warm water.

[0039] Among them, a stop block 41, a valve core gland 42 and a base 43 are provided between the thermostatic valve core 4 and the heat-insulating inner tube 2, and the valve core gland 42 is threadedly connected to the heat-insulating inner tube 2. The stop block 41 is arranged in the heat-insulating inner tube 2 to limit the relative movement of the thermostatic valve core 4. The base 43 serves as an installation support.

[0040] A limit block 51 and a gland member 52 are provided between the switching valve core 5 and the heat-insulating inner tube 2, and the gland member 52 is screwed to the heat-insulating inner tube 2. The position of the switching valve core 5 between the heat-insulating inner tube 2 and the gland member 52 is limited by the corresponding installation of the limit block 51.

[0041] In other embodiments, the cold water circuit can not only play a heat insulation effect, but also further realize the switching of the cold water circuit to the water outlet 21. Specifically, at least one of the other water-dividing chambers of the heat-insulating inner tube 2 is used to connect the cold water circuit and the water outlet 21, and the switching valve core 5 is arranged on the heat-insulating inner tube 2, and is used to select the cold water circuit or the mixed water circuit to be connected to the water outlet 21. Thus, a mixed water circuit and a cold water circuit are formed inside the heat-insulating inner tube 2, and the cold water circuit and the mixed water circuit are obviously separated separately. The mixed water circuit inputs mixed water from the thermostatic valve core 4, and the cold water circuit inputs cold water from the water inlet 22. The two water circuits are arranged in parallel with each other, and finally one water circuit is selected at the water outlet 21 to discharge water to the water outlet 13. It should be mentioned that the switching valve core 5 is an existing water circuit switching valve, which is provided with a rotary switch. After the switch is rotated to the first position, the mixed water circuit and the water outlet 21 are connected correspondingly, and the cold water circuit is in a closed state at this time. After the switch is rotated from the first position to the second position, the cold water channel and the water outlet 21 are connected accordingly, and the mixed water channel is in a closed state.

[0042] like Figures 4 to 6 As shown, in this embodiment, the heat-insulating inner tube 2 is further provided with a hot water inlet hole 24 directly connected to the hot water inlet 11, and a cold water inlet hole 25 connected to the cold water channel 3. The hot water inlet hole 24 and the cold water inlet hole 25 are respectively connected to the mixing chamber of the thermostatic valve core 4, so that the hot water entering from the hot water inlet hole 24 and the cold water entering from the cold water channel 3 are mixed and input into the mixed water waterway in the heat-insulating inner tube 2. Preferably, the hot water inlet hole 24 is opened on the end plane of the inner tube near the position of the thermostatic valve core 4, and is directly opposite to the hot water inlet 11, and a plurality of cold water inlet holes 25 are arranged on both side surfaces of the inner tube located below the hot water inlet hole 24, so as to uniformly and centrally input the hot water and cold water into the thermostatic valve core 4 installed in the inner tube.

[0043] It should be mentioned that the water inlet 22 and the water outlet 21 are oppositely arranged on both sides of the middle of the inner tube body. The water inlet 22 is connected to the cold water channel 3 and the heat-insulating inner tube 2, and the water outlet 21 is directly connected to the water outlet 13 and separated from the cold water channel 3.

[0044] like Figure 7 and Figure 8As shown, in this embodiment, a cold water inlet pipe 7 is provided on the housing 1 at a position corresponding to the cold water inlet 12, a hot water inlet pipe 6 is provided on the housing 1 at a position corresponding to the hot water inlet 11, and a water outlet pipe (not shown) is provided on the housing 1 at a position corresponding to the water outlet 13. The water outlet pipe is used to output the mixed water delivered by the thermostatic valve core 4, or to output the cold water delivered by the cold water inlet pipe 7.

[0045] Wherein, each water inlet is connected to its associated pipe by a threaded connection. In other embodiments, it can also be achieved by direct welding, all of which fall within the protection scope of this case.

[0046] The axis of the cold water inlet 12 is parallel to the axis of the cold water inlet pipe 7, and the axis of the hot water inlet 11 is parallel to the axis of the hot water inlet pipe 6, so as to form a slope connection at the joint. Therefore, after each water inlet pipe is connected to the corresponding water inlet, it is bent and connected to form a slope, in order to correspondingly lengthen the water delivery distance within the limited space, and the input water is first buffered by the slope to avoid direct impact on the internal structural parts of the faucet, which can significantly improve the service life of the faucet.

[0047] It should be mentioned that the outer shell 1 and the heat-insulating inner tube 2 are tubular structures of equal length, and the diameter of the outer shell 1 is larger than the diameter of the heat-insulating inner tube 2. The equal length of the outer shell 1 and the heat-insulating inner tube 2 facilitates the rapid assembly of the thermostatic valve core 4 and the switching valve core 5 at their ends, which is convenient for maintenance and use. The small-diameter heat-insulating inner tube 2 is more conducive to forming the cold water channel 3, so that the temperature of the mixed water transported by the heat-insulating inner tube 2 is difficult to be directly transmitted to the outer shell 1, which can effectively avoid the occurrence of heat conduction and scalding.

[0048] The above are only preferred implementations of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model.

Claims

1. A heat-insulating faucet, comprising a shell, and a hot water inlet, a cold water inlet and a water outlet provided in the shell; characterized in that: A heat-insulating inner tube is correspondingly sleeved in the outer shell, and a gap between the outer wall of the heat-insulating inner tube and the inner wall of the outer shell forms a cold water channel for connecting to the cold water inlet; The insulated inner tube is provided with a thermostatic valve core, and the water from the hot water inlet and the cold water channel respectively enters into the mixing chamber of the thermostatic valve core to form mixed water and further flows into the insulated inner tube; the insulated inner tube is provided with a water outlet hole connected to the water outlet, and the water outlet hole is used to connect the mixed water outlet.

2. The heat-insulating faucet according to claim 1, characterized in that: The insulated inner tube is also provided with a water inlet hole directly connected to the cold water channel, and a cold water path connected to the water inlet hole; the cold water path is formed in the insulated inner tube and is separated from the mixed water path in the insulated tube, and is used to further implement cold water insulation on at least the mixed water in the insulated inner tube.

3. The heat-insulating faucet according to claim 2, characterized in that: The heat-insulating inner tube forms a plurality of water-dividing chambers correspondingly through the internal "8"-shaped partition plate, and at least one of the water-dividing chambers is used to connect the thermostatic valve core and the water outlet.

4. The heat-insulating faucet according to claim 2, characterized in that: It also includes a switching valve core, which is arranged in the heat-insulating inner tube and is used to adjust the opening to connect the mixed water waterway to the water outlet hole accordingly.

5. The heat-insulating faucet according to claim 4, characterized in that: The thermostatic valve core is arranged on one side of the shell and connected to one end of the heat-insulating inner tube, and the switching valve core is arranged on the other side of the shell and connected to the other end of the heat-insulating inner tube.

6. The heat-insulating faucet according to claim 5, characterized in that: A stop block, a valve core gland and a base are provided between the thermostatic valve core and the thermally insulated inner tube, and the valve core gland is threadedly connected to the thermally insulated inner tube; and a limit block and a gland piece are provided between the switching valve core and the thermally insulated inner tube, and the gland piece is threadedly connected to the thermally insulated inner tube.

7. The heat-insulating faucet according to claim 1, characterized in that: The insulated inner tube is also provided with a hot water inlet hole directly connected to the hot water inlet, and a cold water inlet hole connected to the cold water channel; the hot water inlet hole and the cold water inlet hole are respectively connected to the mixing chamber of the thermostatic valve core, so that the hot water entering from the hot water inlet hole and the cold water entering from the cold water channel are mixed and input into the mixed water waterway in the insulated inner tube.

8. The heat-insulating faucet according to claim 1, characterized in that: A cold water inlet pipe is provided on the shell corresponding to the cold water inlet, a hot water inlet pipe is provided on the shell corresponding to the hot water inlet, and a water outlet pipe is provided on the shell corresponding to the water outlet; and the water outlet pipe is used to output the mixed water delivered by the thermostatic valve core, or to output the cold water delivered by the cold water inlet pipe.

9. The heat-insulating faucet according to claim 8, characterized in that: Each water inlet is threadedly connected to its associated pipe; the axis of the cold water inlet is parallel to the axis of the cold water inlet pipe, and the axis of the hot water inlet is parallel to the axis of the hot water inlet pipe, so as to form a slope connection at the junction.

10. The heat-insulating faucet according to claim 1, characterized in that: The outer shell and the heat-insulating inner tube are tubular structures with comparable lengths, and the diameter of the outer shell is larger than the diameter of the heat-insulating inner tube.

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