Energy-saving zero-cold-water valve element

Abstract

The utility model discloses an energy-saving zero-cold-water valve element, and mainly relates to household hot water use, in particular to the technical field of energy-saving zero-cold-water circulation. At present, zero cold water mainly has the problems that energy is wasted due to the fact that accurate zero cold water circulation cannot be achieved, and circulation completion is not prompted. According to the technology, the problems are mainly solved by additionally arranging a zero cold water gear on a faucet valve element, detecting temperature and the like; when the handle is rotated to a zero cold water gear, the second water passing groove communicates the cold water inlet with the hot water inlet, so that the cold water pipe communicates with the hot water pipe, a water heater circulating system is started, cold water in the hot water pipe is circulated back to the water heater, and accurate zero cold water is achieved. According to the technology, energy and time are saved, and the water use comfort is improved; a new decoration user does not need to independently arrange a water return pipe, so that the decoration cost is saved; an installed user can achieve the energy-saving and zero-cold-water function by replacing a zero-cold-water valve element and optional matching devices and combining a zero-cold-water water heater or additionally arranging an external circulating system.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of energy-saving hot water for household use, and in particular to the technical field of energy-saving zero cold water circulation. Background Art

[0002] When people use hot water, they first discharge the cold water from the water heater to the water point, and then discharge the hot water. In order to avoid water waste and improve the water use experience, zero cold water water heaters or ordinary water heaters with external circulation pump systems came into being. The main principle is to use the circulation pump system to first pump the cold water in the hot water pipe back to the water heater. When the hot water circulates to the water heater or the water point, the circulation is completed. At this time, you can use hot water by turning on the faucet, so it is called zero cold water. In order to achieve zero cold water, the layout of the circulation pipeline and implementation are usually as follows:

[0003] A. As attached Fig.24 As shown, the existing hot and cold water pipes are used, and an H check valve (8) is installed at a distant water point. The advantages and disadvantages of this solution are as follows:

[0004] A1. When the water heater is located between water points and the water points are not in the same direction, for example, one branch of the water heater hot water outlet pipe is directed to the kitchen and the other branch is directed to the remote bathroom in the other direction, the start-up cycle can only circulate cold water from the remote bathroom to the water heater, and the kitchen water point cannot achieve zero cold water; if an H check valve (8) is added to the water point in the other direction, the cycle time will be extended and more energy will be wasted;

[0005] A2. When a water point needs hot water, when the circulation mode is started, the cold water in the hot water pipes related to other water points must be pumped back and circulated to the water heater, that is, there is a problem of "one point of water use, multiple circulations", which not only takes a long time to wait, but also wastes energy;

[0006] A3.H check valve (8) has water leakage and wrongly starts the water heater. It cannot effectively cut off the circulation connection between the cold water pipe and the hot water pipe when zero cold water circulation is not required, such as when flushing the toilet;

[0007] A4. Use the existing hot and cold water pipes for circulation, such as the attached Fig.24 As shown by the middle dotted line, hot water usually circulates in the main water channel pre-buried during decoration. There is usually a certain vertical distance from the main water channel pre-buried during decoration to each water use point. This distance is generally about 1 meter and cannot circulate to hot water. Before using hot water, the water discharged from this section of the pipe is still cold water, not true zero cold water.

[0008] B. To overcome some of the above shortcomings, as shown in the attached Fig.25As shown, when users renovate their homes, they usually choose to lay out a return pipe (7) separately. The main implementation methods include a jog mode, a reservation mode, and an all-weather mode. These modes can basically achieve the effect of turning on the faucet and quickly getting hot water, thereby improving the water use experience. However, this method still has shortcomings:

[0009] B1. There is no uniform standard for laying out the return pipe (7). Some adopt remote circulation, that is, adding an independent return pipe (7) from the remote water point, which solves the problem of hot water in the return circulation connecting the cold water pipe and the problem of false start, but the other problems mentioned above still exist, especially the problem of "one place water, multiple circulation" wasting energy, and the problem of not achieving true zero cold water has not been effectively solved;

[0010] B2. Laying the return pipe (7) There is also a way of laying the pipes in series with each water point for circulation. The advantage is that the circulating hot water is closer to the water point, but the circulation line is longer and the waiting time is longer. In particular, "one water point, multiple circulations" will waste more energy;

[0011] B3. In addition to the above-mentioned problems in pipe layout, there are also the following deficiencies in specific implementation: the all-weather mode can keep hot water in the circulation pipe at any time, and each water point can use hot water quickly, but the water heater starts circulating heating more times, which not only wastes more energy, but may also affect the life of equipment and pipes; the reservation mode can take both into account, but the operation is cumbersome, especially when the usage time is irregular, which will affect the experience;

[0012] In addition to their own advantages and disadvantages, the above different methods also have common shortcomings:

[0013] Q1. There is no real way to get closer to zero cold water: In the above method, the hot water circulation points that can be reached by hot water circulation are mostly at the location of the hot water angle valve pre-buried in the decoration. The water taps at the water point are usually connected by high-pressure braided pipes. The cold water in the high-pressure braided pipes must be drained before hot water is discharged. The so-called zero cold water needs to be further improved;

[0014] Q2. When hot water circulates to the water use point, the hot water should be available for use. However, because there is no water temperature detection or reminder device at the water use point, it is difficult for users to know exactly when the circulation is completed. Usually, they open the faucet several times to test the water temperature to see if the hot water has arrived. Not only is the water use experience poor, there is even a risk of scalding, and it wastes energy.

[0015] In general, when using the zero cold water function, the following problems affect the comfortable water use experience and cause energy waste, which need to be further improved: first, the zero cold water circulation line cannot accurately reach the required water use point; second, the hot water in the zero cold water circulation line reaches the water use point without water temperature detection and matching reminder device. Utility Model Content

[0016] In view of the above problems, the utility model provides an energy-saving zero-cold water valve core, which mainly solves the above-mentioned problem that the hot water in the zero-cold water circulation line cannot accurately reach the required water use point, and there is no water temperature detection when the hot water reaches the water use point. Another problem "matching reminder device" is patented separately. The technical solution has the characteristics and advantages of simple structure, low production and use costs, flexible and convenient use, high efficiency and energy saving. Every family, whether newly renovated or already renovated, can enjoy the results brought by technological innovation.

[0017] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model to solve its technical problems is:

[0018] An energy-saving zero cold water valve core, such as Figure 1 As shown, it mainly comprises a valve core cap (11), a rocker kit (12), a moving disc mother seat (13), (wherein the moving disc mother seat is an optional structure), a moving disc (14), a stationary disc (15), and a stationary disc mother seat (16), wherein the valve core housing (111) can be connected to the valve core cap (11) as a whole, and can also be connected to the stationary disc mother seat (16) as a whole, and the stationary disc (15) and the stationary disc mother seat (16) are connected by a water-proof gasket (160), and the above-mentioned components constitute a basic valve core (1); characterized in that:

[0019] like Figure 4 As shown, the movable disc (14) comprises a movable disc A surface (141) and an opposite movable disc B surface (142), wherein the movable disc A surface (141) is connected to the movable disc female seat (13). For ease of understanding, the movable disc B surface (142) in the figure is a perspective plane from the A surface to the B surface, which fits with the static disc (15). The movable disc B surface (142) is provided with a first water-passing groove (143) and a second water-passing groove (144), and both water-passing grooves do not penetrate the movable disc (14);

[0020] like Figure 5 As shown, the static disc (15) is provided with a first static disc water inlet (151), a second static disc water inlet (152), and a static disc water outlet (153), and the water inlet and the water outlet both penetrate the static disc (15); the first static disc water inlet (151) and the second static disc water inlet (152) are respectively indirectly connected to the hot water pipe (6) and the cold water pipe (5) in a corresponding manner or in an alternating manner, and the corresponding connection or alternating connection means that each water inlet can be connected to either the hot water pipe (6) or the cold water pipe (5) according to user habits.

[0021] like Figure 6 As shown, the two water inlets of the valve core are connected to the hot water pipe or the cold water pipe respectively, which can be connected correspondingly or alternately, so as to present Figure 6 a and Figure 6b. In the two cases, the water inlet connected to the hot water pipe (6) corresponds to the hot water gear, and the water inlet connected to the cold water pipe (5) corresponds to the cold water gear; the position corresponding to the middle of the cold water gear and the hot water gear is the warm water middle gear (155), and the hot water gear end position (156) is formed when the water is rotated from the warm water middle gear (155) to the hot water gear, and the cold water gear end position (154) is formed when the water is rotated to the cold water gear. Because hot water is mostly used in cold weather, the faucet handle mostly stays at the hot water gear after using the water. In order to facilitate the user to operate quickly, a zero cold position is provided in the extension direction of the hot water gear end position (156). The water gear is rotated to the end position of the zero cold water gear as the zero cold water gear end position (157), and the extension direction refers to the direction in which the faucet handle (2) drives the valve core rocker (121) and the movable plate (14) to rotate from the warm water center gear (155) to the hot water gear end position (156), and then continue to rotate along the original direction. The extension range does not include the rotation angle range between the hot water gear end position (156) as the starting point, the warm water center gear (155), and then the cold water gear end position (154). At the same time, the extension range does not include the end gear position pointed to by the 180-degree rotation from the warm water center gear (155) as the starting point;

[0022] like Figure 7 , Figure 8 As shown, for ease of understanding, the thick black line and the thin black line in the figure represent two disk surfaces respectively. When the faucet handle (2) drives the valve core rocker (121) and the movable plate (14) to rotate or rock to the hot water gear, the warm water gear or the cold water gear, the first water-passing groove (143) connects or disconnects the static plate water outlet (153) with the static plate first water inlet (151) and (or) the static plate second water inlet (152). When connected, the cold water, hot water and warm water outlet functions are realized; when not connected, that is, disconnected, the water shut-off function is realized, and the corresponding valve core rocker (121) is in the water-on state or the water-off state; at the same time, the second water-passing groove (144) does not affect the above-mentioned function of the first water-passing groove (143);

[0023] like Fig. 9As shown, when the valve core rocker (121) is in the water-off state, the faucet handle (2) drives the valve core rocker (121) and the movable plate (14) to rotate or shake to the zero cold water gear, and the second water-passing groove (144) connects the first water inlet (151) of the static plate and the second water inlet (152) of the static plate. At this time, the hot water pipe (6) and the cold water pipe (5) are connected at the valve core, and the zero cold water circulation channel is opened. In order to realize the function of opening the above-mentioned zero cold water circulation channel, it can also be realized in another way, that is, When the valve is rotated to the zero cold water position, the valve core rocker (121) is shaken to make it in the boiling water state. At this time, the second water-passing groove (144) connects the first water inlet (151) of the static plate disk and the second water inlet (152) of the static plate disk. At this time, the hot water pipe (6) and the cold water pipe (5) are connected at the valve core, and the zero cold water circulation channel is opened. The above two methods can both realize the function of opening the zero cold water circulation channel. The difference lies in the different position states of the second water-passing groove (144). The principles are the same and will not be repeated here.

[0024] like Fig.11 , Fig.12 , Fig.13 As shown, in order to limit the range of movement of the faucet handle (2), the valve core rocker (121) and the movable plate (14), mutually matching limit devices are respectively provided at the positions where the valve core cap (11) and the rocker kit (12) meet at the corresponding positions of the cold water gear end position (154) and the zero cold water gear end position (157), so that the valve core rocker (121) does not exceed the end position when it is rotated.

[0025] Furthermore, a zero cold water gear is provided in the extension direction of the hot water gear end position (156). In order for the user to conveniently and quickly rotate to the zero cold water gear, the extension range does not exceed the rotation arc range from the hot water gear end position (156) through the warm water center gear (155) to the cold water gear end position (154).

[0026] Further, such as Fig.11 As shown, in order to limit the range of movement of the faucet handle (2) and the valve core rocker (121) and the gear position indication, a cold water gear limit boss (114) is provided in the brim (112) of the valve core cap (11) along the direction of the cold water gear end position (154), a hot water gear recess (113) is provided along the direction of the hot water gear end position (156), and a zero cold water gear limit boss (115) is provided along the direction of the zero cold water gear end position (157); wherein the cold water gear limit boss (114) and the zero cold water gear limit boss (115) can be independently provided or connected as one.

[0027] Further, such as Fig.12As shown, in order to limit the range of motion of the faucet handle (2) and the valve core rocker (121) and the gear position prompt, the limit chassis (122) of the rocker kit (12) is provided with a limit boss (123). When the valve core rocker (121) rotates to the corresponding position of the cold water gear end position (154) or the zero cold water gear end position (157), the limit boss (123) and the matching cold water gear limit boss (114) or the zero cold water gear limit boss (115) cooperate with each other to realize the rotation of the valve. The core rocker (121) does not exceed the end position, and a circular hole (124) is arranged at the center of the limiting boss. A spring (125) is arranged in the circular hole, and a circular convex head (126) is arranged at the outer end of the spring. When the valve core rocker (121) is rotated to the hot water gear end position (156), the circular convex head (126) just falls into the hot water gear recess (113), and collides with the hot water gear recess (113) under the pushing action of the spring (125) to emit a prompt sound, thereby prompting the user that the position is the boundary between the hot water gear and the zero cold water gear.

[0028] Furthermore, in order for the user to know the temperature status of the water inlet and outlet, such as Fig.19 As shown, the static disc mother seat (16) is provided with a temperature detection head and a temperature detection head output line (166); the connection between the temperature detection head and the static disc mother seat (16) is treated to prevent water leakage, and the temperature detection head is arranged in any of the following ways:

[0029] A. A first temperature detection head (163) is arranged at the first water inlet (161) or the second water inlet (162) of the mother base. When the zero cold water circulation is started, the hot water circulation reaches the water inlet and is detected by the temperature detection head (163), and a signal is transmitted to a prompt device matched with the faucet (detailed description is provided in a patent separately applied by the applicant), and at the same time, the user is prompted that hot water has reached the faucet valve core and the hot water can be used at this time.

[0030] B. In order to facilitate users to understand the water temperature of the faucet, based on the above A, a second temperature detection head (165) can also be set in the water outlet (164) of the mother base to detect the water outlet temperature and transmit a signal to the prompt device of the faucet (specifically described in the patent applied for separately by the applicant). The user can adjust the water temperature to a comfortable level according to the water temperature display.

[0031] Furthermore, in order to make the temperature probe output line routing standard and beautiful, Fig.19 As shown, the valve core cap (11) is provided with a wire groove (116) on the surface of the valve core shell, and the temperature detection head output line (166) is placed in the wire groove (116) and protected and fixed by tape (117) or other fixing methods.

[0032] The beneficial effects of the utility model are: Fig. 22 , Fig.23 As shown, in Fig. 22 a. Fig.23 In a, the energy-saving zero cold water valve core of the technical solution is installed in the faucet A at the water point, and the relevant supporting devices are replaced, or the faucet of the overall solution including the energy-saving zero cold water valve core is replaced. When the user uses hot water at A, the zero cold water circulation and heating function of the water heater is started, and the hot and cold water pipes are connected by turning the faucet handle to the zero cold water position to realize zero cold water circulation; when the hot water circulation reaches the faucet valve core, the user can use the hot water at the first time through the valve core temperature detection function and the supporting devices; after the hot water is used up, the faucet is turned off, at this time the zero cold water channel is closed and in a normally closed state, when the user uses the zero cold water function of hot water at other water points, such as B, the circulation route does not pass through the water point at A, and only the water point at B is precisely circulated with zero cold water; compared Fig. 22 b H check valve (8) circulation technology, Fig.23 b) the return pipe (7) circulation mode, this technical solution completely solves the problem of "water use in one place, circulation in multiple places" wasting energy, not only saves energy, but also saves water circulation waiting time, and also improves the comfortable experience of water use; at the same time, for new decoration users, it is no longer necessary to lay a return pipe (7) separately, and the energy-saving zero cold water function can be achieved by using hot and cold water pipes, thereby saving decoration costs and later use costs.

[0033] It should be specially noted that the above-mentioned description, extended description or embodiment of the technical solution, especially the technical features recorded in the claims, is only a representative situation proposed to facilitate the understanding of the technical solution, and is not complete or limiting. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 . Exploded view of the faucet and internal valve core from above

[0035] Figure 2 . Basin faucet and shower faucet case diagram

[0036] Figure 3 .Dish basin faucet example picture

[0037] Figure 4 .observe Figure 2 Middle moving disc status diagram

[0038] Figure 5 .observe Figure 2 Medium static disc status diagram

[0039] Figure 6 .Zero cold water level example

[0040] Figure 7 .observe Figure 2 Demonstration diagram of the bonding between the moving disc and the static disc

[0041] Figure 8.Water flow or shut-off diagram for cold water, hot water, and warm water

[0042] Fig. 9 .Zero cold water circulation state diagram in water off state

[0043] Fig.10 .Zero cold water cycle three-step flow chart

[0044] Fig.11 .observe Figure 2 Middle valve cap status diagram

[0045] Fig.12 .observe Figure 2 Middle joystick kit status diagram

[0046] Fig.13 .observe Figure 2 The assembly status diagram of the middle valve core cap and rocker kit

[0047] Fig.14 .observe Figure 2 Diagram of the state of the middle faucet handle driving the rocker to rotate or shake

[0048] Fig.15 .observe Figure 3 Demonstration diagram of the bonding between the moving disc and the static disc

[0049] Fig.16 .observe Figure 3 Demonstration diagram of the combination of the middle valve core cap and the rocker kit

[0050] Fig.17 .observe Figure 3 ZhongZero cold water circulation routine operation flow chart

[0051] Fig.18 .observe Figure 3 General operation status diagram of water switch in the middle

[0052] Fig.19 .Disassembled diagram of valve core temperature probe and connection assembly

[0053] Fig. 20 .Application example of zero cold water valve core connected to zero cold water water heater

[0054] Fig.21 .Application example diagram of zero cold water valve core connected to non-zero cold water water heater

[0055] Fig. 22 .Comparison of water circulation methods for kitchen sinks using zero cold water function Figure 1

[0056] Fig.23 .Comparison of water circulation methods for kitchen sinks using zero cold water function Figure 2

[0057] Fig.24 .Remote installation H check valve water circulation example diagram

[0058] Fig.25 .Remote installation return pipe (7) Water circulation example diagram

[0059] The annotations in the figure are as follows:

[0060] Valve core (1), valve core cap (11), rocker kit (12), moving disc female seat (13), moving disc (14), stationary disc (15), stationary disc female seat (16);

[0061] Valve core housing (111), brim (112), hot water gear notch (113), cold water gear limit boss (114), zero cold water gear limit boss (115), wire trough (116), adhesive tape (117);

[0062] Valve core rocker (121), limiting base plate (122), limiting boss (123), round hole (124), spring (125), round boss (126), rocker kit rotation mark (127);

[0063] A surface (141) of a moving plate, a surface (142) of a moving plate, a first water-passing groove (143), a second water-passing groove (144), and a moving plate rotation direction mark (145);

[0064] The first water inlet (151) of the static plate, the second water inlet (152) of the static plate, the water outlet (153) of the static plate, the end position of the cold water gear (154), the middle position of the warm water gear (155), the end position of the hot water gear (156), and the end position of the zero cold water gear (157);

[0065] A water-leakage-proof gasket (160), a first water inlet (161) of a mother base, a second water inlet (162) of a mother base, a first temperature detection head (163), a water outlet (164) of a mother base, a second temperature detection head (165), and a temperature detection head output line (166);

[0066] Faucet handles (2);

[0067] Zero cold water water heater (41), built-in circulation pump system (42), non-zero cold water water heater (43), external circulation pump system (44), cold water pipe (5), hot water pipe (6), water flow mark (51-55), water flow mark (61-66), return pipe (7), H check valve (8) DETAILED DESCRIPTION

[0068] In order to facilitate the understanding of the present application, the present application will be described more comprehensively with reference to the relevant drawings below. The drawings are only for understanding and not for limitation. The embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. In the present application, the terms "integrated into one", "assembled", "connected", "fixed", "connected", "fitted" and the like in the drawings or text descriptions should be understood in a broad sense. For example, "connected" can be a fixed connection or a detachable connection, a wired connection or a wireless connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements; in the present application, the terms "overlooking", "perspective", "horizontal", "centered", "facing directly forward", "facing directly downward", "facing directly upward", "horizontal", "vertical", "center" and the like in the drawings or text descriptions are the observation angles or observations obtained in combination with the drawings in the corresponding embodiments. The drawings are only used to understand the present technical solution and are not limited.

[0069] Example 1. When the valve core is installed vertically or the valve core is installed horizontally with the handle facing downward, the water and zero cold water circulation examples

[0070] like Figure 2 As shown, the case in the figure is only used to understand the principle of zero cold water valve core. The first case ( Figure 2 a) Basin faucet, where the outer frame is a schematic diagram of the basin, the valve core is installed vertically on the faucet, and the faucet handle (2) is centered and facing forward, or in the second case ( Figure 2 b) Shower faucet, when the valve core is installed horizontally on the faucet and the faucet handle (2) is centered and facing downward, the working principle of the valve core is as follows:

[0071] like Figure 8 , Fig. 9 , Fig.10 , Fig.14 As shown, the faucet handle (2) can drive the valve core rocker (121) and the movable plate (14) to rotate or rock to the warm water gear, hot water gear, cold water gear, and zero cold water gear; the different state changes in the figure can be seen through the rocker kit rotation mark (127) and the movable plate rotation direction mark (145);

[0072] like Figure 8As shown, the sub-diagrams abcdef respectively represent: warm water gear off-cold water gear off-hot water gear off-warm water gear outflow-cold water gear outflow-hot water gear outflow, when the faucet handle (2) is in a vertical or horizontal state and is rotated to the warm water gear, the cold water gear, and the hot water gear, the first water-passing groove (143) or the second water-passing groove (144) does not connect the static plate water outlet (153) with the static plate first water inlet (151) and / or the static plate second water inlet (152). The water inlet (152) is connected to the faucet, thereby realizing the water shut-off function; when the faucet handle (2) is lifted, the valve core rocker (121) shakes the movable plate (14) to slide, and the first water-passing groove (143) connects the static plate water outlet (153) with the first water inlet (151) of the static plate and / or the second water inlet (152) of the static plate, thereby realizing the functions of turning on warm water, cold water and hot water, and the second water-passing groove (144) does not affect the above functions;

[0073] like Fig.10 As shown, the sub-diagrams abc represent: hot water gear on - hot water gear off - zero cold water cycle, through one on, two off, three cycles, three steps to achieve zero cold water cycle; Fig.14 As shown, the sub-diagrams abcdefgh respectively represent: warm water gear off-cold water gear off-hot water gear off-zero cold water circulation-warm water gear outflow-cold water gear outflow-hot water gear outflow-zero cold water gear outflow; when the faucet handle (2) is briefly opened at the hot water gear and then closed, as shown in FIG. Fig. 20 As shown, after the hot water pipe (6) briefly discharges water and turns off the water at the basin faucet, the zero cold water water heater (41) receives the water flow change signal and starts the built-in circulation pump system (42) and the heating system;

[0074] For example Fig.10 As shown, when the faucet handle (2) is turned to the zero cold water position in time, the second water-passing groove (144) connects the first water inlet (151) of the static plate with the second water inlet (152) of the static plate, and at this time, the hot water pipe (6) and the cold water pipe (5) indirectly connected to the two water inlets are connected at the faucet valve core, and the zero cold water circulation channel is opened;

[0075] For example Fig. 20 As shown, the water flows along the water flow mark 61-62-63-64-faucet valve core zero cold water channel-51-52-53-54. When the hot water flows through the water inlet of the basin faucet valve core, Fig.19As shown, after the first temperature detection head (163) detects hot water, it transmits a signal to a prompt device (described in detail in a patent separately applied for by the present applicant) that is matched with the faucet connected thereto, and then sends a prompt signal to inform the user that hot water has reached the faucet valve core. At this time, the user turns the faucet handle (2) to the hot water position to use hot water, and the hot water flows through the mother seat water outlet (164). After the second temperature detection head (165) detects hot water, it transmits a signal to a prompt device (described in detail in a patent separately applied for by the present applicant) that is matched with the faucet, and the user senses the water temperature through the temperature display and adjusts it to a comfortable temperature.

[0076] When the hot water is used up, turn off the faucet handle and keep it at the hot water, warm water or cold water gear. At this time, the zero cold water channel is closed and in a normally closed state. When other water use points use hot water and the zero cold water circulation is started, the hot water circulation does not pass through the water use point, so they do not affect each other, and can achieve energy-saving effects of independent circulation of water use at various locations. The above operation process can be summarized as the "one open, two close, three circulation" zero cold water three-step process, and the energy-saving zero cold water function can be achieved through these three steps.

[0077] Example 2. Example of water switching and zero cold water circulation when the valve core is installed horizontally (the faucet handle is facing upward)

[0078] like Figure 3 As shown, a kitchen sink faucet is used as an example to understand the principle of the zero cold water valve core. The valve core is installed horizontally on the faucet. When the faucet handle (2) is centered and facing upward, the working principle of the valve core is as follows:

[0079] like Fig.15 , Fig.16 , Fig.17 , Fig.18 As shown, the directions or positions of the water-passing groove of the moving plate and the water inlet and outlet of the stationary plate are changed as in Example 1 due to the scene change, and the principle is the same as in Example 1. Fig.17 In the figure, sub-diagrams abcd represent: turning on hot water - turning off hot water - zero cold water circulation - hot water output; Fig.18 In the figure, sub-diagrams abcd represent respectively: turning off water at warm water level - discharging water at warm water level - turning on cold water - turning on hot water, which are described in detail in the figures and will not be repeated here.

[0080] Example 3. Application example of non-zero cold water water heater and the zero cold water valve core of this technical solution:

[0081] like Fig.21For families that have already renovated their homes but have not installed a zero cold water function water heater, they can replace it with a zero cold water water heater, or they can add an external circulation pump system (44) to the non-zero cold water water heater (43). The external circulation pump system (44) is set on the cold water pipe (5) or the hot water pipe (6). The faucet valve core at the water point is replaced with the zero cold water valve core of the present technology, and a matching prompt device can be optionally provided. The ordinary faucet becomes a zero cold water faucet, and the zero cold water energy-saving function can be achieved. When hot water is used at the water point of the vegetable basin, the water circulation and heating system of the water heater are started according to the "one open, two close, three cycles" operation of the above embodiment 1. When the faucets at other water points other than the vegetable basin are not used, the water circulation and heating system of the water heater are started. When the zero cold water is circulating, its zero cold water channel is in a normally closed state, and the hot water can only reach the zero cold water faucet at the vegetable basin along the water flow marks 61-65-66, and then flow along the water flow marks 55-53-54, and finally return to the water heater, forming an independent water cycle, thereby achieving the energy-saving benefit of one-place water use and independent circulation; the remaining working principles are the same as Example 1; even if hot water is used in multiple places, the zero cold water circulation channel is turned on, and the hot water is only circulated at the water use points where the zero cold water circulation channel is turned on, and other water use points that have not turned on the zero cold water circulation channel will not circulate, thereby achieving precise zero cold water circulation, saving energy and circulation time, and improving the comfortable water use experience.

Claims

1. An energy-saving zero cold water valve core, mainly comprising a valve core cap (11), a rocker kit (12), a moving plate mother seat (13), a moving plate (14), a static plate (15), and a static plate mother seat (16), wherein the valve core housing (111) can be connected to the valve core cap (11) as a whole, and can also be connected to the static plate mother seat (16) as a whole, and is characterized in that: The moving plate B surface (142) is provided with a first water-passing groove (143) and a second water-passing groove (144), and the two water-passing grooves do not penetrate the moving plate (14); the static plate (15) is provided with a first static plate water inlet (151), a second static plate water inlet (152), and a static plate water outlet (153), and the water inlet and the water outlet both penetrate the static plate (15); the first static plate water inlet (151) and the second static plate water inlet (152) are respectively indirectly connected to the hot water pipe (6) and the cold water pipe (5) or alternately connected; The water inlet connected to the hot water pipe (6) corresponds to the hot water gear, and the water inlet connected to the cold water pipe (5) corresponds to the cold water gear; the position corresponding to the middle of the cold water gear and the hot water gear is the warm water middle gear (155); the position from the warm water middle gear (155) to the hot water gear is the hot water gear end position (156); the position from the warm water middle gear (155) to the cold water gear is the cold water gear end position (154); a zero cold water gear is set in the extension direction of the hot water gear end position (156); the position from the cold water gear to the zero cold water gear end position is the zero cold water gear end position (157), the extension direction refers to the direction in which the valve core rocker (121) drives the movable plate (14) to rotate from the warm water center position (155) to the hot water end position (156), and then continues to rotate along the original direction. The extension range does not include the rotation angle range from the hot water end position (156) as the starting point to the warm water center position (155) and then to the cold water end position (154). At the same time, the extension range does not include the end position pointed to by the 180-degree rotation from the warm water center position (155) as the starting point. When the valve core rocker (121) drives the movable plate (14) to rotate or rock to the hot water gear, the warm water gear or the cold water gear, the first water-passing groove (143) connects or disconnects the static plate water outlet (153) with the static plate first water inlet (151) and / or the static plate second water inlet (152), thereby realizing the discharge or shut-off of cold water, hot water and warm water; when the valve core rocker (121) drives the movable plate (14) to rotate or rock to the zero cold water gear, the second water-passing groove (144) connects the static plate first water inlet (151) and the static plate second water inlet (152), at which time the hot water pipe (6) and the cold water pipe (5) are connected at the valve core, and the zero cold water circulation channel is opened; At the corresponding positions of the cold water gear end position (154) and the zero cold water gear end position (157), mutually matching limit devices are respectively arranged at the intersection of the valve core cap (11) and the rocker arm assembly (12), so that the valve core rocker arm (121) does not rotate beyond the end position.

2. The energy-saving zero cold water valve core according to claim 1, characterized in that: A zero cold water gear is arranged in the extension direction of the hot water gear end position (156), and the extension range does not exceed the rotation arc range from the hot water gear end position (156) to the cold water gear end position (154) via the warm water middle gear (155).

3. The energy-saving zero cold water valve core according to claim 1, characterized in that: A cold water gear limiting boss (114) is arranged in the brim (112) of the valve core cap (11) along the direction of the cold water gear end position (154), a hot water gear recess (113) is arranged along the direction of the hot water gear end position (156), and a zero cold water gear limiting boss (115) is arranged along the direction of the zero cold water gear end position (157).

4. The energy-saving zero cold water valve core according to claim 1, characterized in that: The limiting chassis (122) of the rocker kit (12) is provided with a limiting boss (123), a circular hole (124) is provided at the center of the limiting boss, a spring (125) is provided in the circular hole, and a round convex head (126) is provided at the outer end of the spring.

5. The energy-saving zero cold water valve core according to claim 1, characterized in that: The static disc mother seat (16) is provided with a temperature detection head, and the temperature detection head is provided in any of the following ways: A. A first temperature detection head (163) is provided at the first water inlet (161) of the mother base or the second water inlet (162) of the mother base; B. On the basis of the above A, a second temperature detection head (165) is simultaneously arranged in the water outlet (164) of the mother seat.

6. The energy-saving zero cold water valve core according to claim 1, characterized in that: The valve core cap (11) is provided with a wire groove (116) on the surface of the valve core shell, and the output wire (166) of the temperature detection head is placed in the wire groove (116).

Images