Cold and hot water valve and water supply system

Abstract

The utility model belongs to the technical field of valves and discloses a cold and hot water valve and a water supply system. The cold and hot water valve comprises a valve body and a one-way valve, the valve body comprises a first connector, a second connector, a third connector and a fourth connector, the first connector and the second connector are coaxially arranged, and the third connector and the fourth connector are coaxially arranged. A first water inlet / outlet, a second water inlet / outlet, a third water inlet / outlet and a fourth water inlet / outlet are respectively formed in the four joints, the first water inlet / outlet is always communicated with the fourth water inlet / outlet to form a first channel, and the second water inlet / outlet is always communicated with the third water inlet / outlet to form a second channel; and the two are not directly intersected and communicated. A communicating hole facing the second water inlet and outlet is formed in the channel wall, located in the first channel, of the second channel. The one-way valve is arranged in the second connector and only allows fluid to flow from the communicating hole to the first channel. The cold and hot water valve can be used for linear arrangement of a cold water pipe and a hot water pipe. In addition, the structure is simpler, and the overall size is small.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to cold and hot water valves and a water supply system. Background Art

[0002] Water supply systems, such as water heater water supply systems or wall-mounted boiler water supply systems, are usually used to provide water for users. Conventional water supply systems usually include hot water supply devices, cold water pipes, hot water pipes, mixing valves and other structures; wherein the hot water supply device is connected to the mixing valve through the hot water pipe, so that the hot water supplied by the hot water supply device and the cold water supplied by the cold water pipe are mixed into water with suitable temperature by the mixing valve, and then supplied to the water outlet (such as shower heads, faucets and other water outlet structures) for users to use.

[0003] In the related art, in order to enable the traditional water supply system to have the zero cold water function, hot and cold water valves are usually configured in the water supply system. Such hot and cold water valves are usually set close to the water use end. The hot and cold water valves are connected to the cold water pipe and the hot water pipe to form a return water path in the water supply system. When the zero cold water mode is turned on, the cold water at the water outlet is first returned to the hot water supply device through the return water path, and then supplied to the water outlet after being heated by the hot water supply device. This can avoid the appearance of cold water at the water outlet when the water outlet is turned on.

[0004] In the existing hot and cold water valve, cold water or hot water turns to enter the outlet after entering the valve body, which is not applicable to cold water pipes and hot water pipes arranged in a straight line. In addition, the one-way valve inside the hot and cold water valve has a complex structure and a relatively large volume, which affects the miniaturization development of the hot and cold water valve.

[0005] Therefore, it is urgent to improve the hot and cold water valves and water supply systems to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a hot and cold water valve and a water supply system, wherein the two channels in the valve body are arranged in a straight line, respectively, and can be applied to the working condition where the cold water pipe and the hot water pipe are arranged in a straight line. Moreover, the valve body and the sealing ring of the one-way valve are omitted, and the structure is simpler, which is conducive to reducing the overall volume of the hot and cold water valve.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] Hot and cold water valves, including:

[0009] A valve body, the valve body comprising a first joint, a second joint, a third joint and a fourth joint, the first joint and the second joint are coaxially arranged, the third joint and the fourth joint are coaxially arranged; the first joint is provided with a first water inlet and outlet, the second joint is provided with a second water inlet and outlet, the third joint is provided with a third water inlet and outlet, the fourth joint is provided with a fourth water inlet and outlet, the first water inlet and outlet are always connected with the second water inlet and outlet to form a first channel, the fourth water inlet and outlet are always connected with the third water inlet and outlet to form a second channel, the first channel runs through the second channel, and the first channel and the second channel do not directly intersect and communicate;

[0010] A communication hole is provided on the channel wall of the second channel in the first channel, and the communication hole is arranged toward the second water inlet and outlet;

[0011] A one-way valve is disposed in the second joint, and the one-way valve only allows fluid to flow from the connecting hole to the first channel.

[0012] As an optional solution, a boss is circumferentially provided at one end of the communicating hole facing the second joint, and the boss is used to abut against the one-way valve.

[0013] As an optional solution, a connecting pipe is provided in the first channel, and the connecting pipe connects the third joint and the fourth joint to form the second channel.

[0014] As an optional solution, the connecting pipe and the valve body are an integrated structure.

[0015] As an optional solution, the connecting hole is arranged on the connecting pipe.

[0016] As an optional solution, a filter is provided in the third joint, and the filter is used to filter the fluid entering the valve body from the third water inlet and outlet.

[0017] As an optional solution, the one-way valve includes:

[0018] A mounting seat, disposed in the valve body;

[0019] A first valve core is elastically disposed on the mounting seat, and the first valve core elastically abuts against the boss to selectively block the communication hole;

[0020] A second valve core is slidably disposed in the mounting seat, the second valve core is located on the side of the first valve core away from the boss, a first elastic member is disposed between the second valve core and the first valve core, and when the second valve core is pushed by the fluid entering from the second water inlet and outlet, a thrust is applied to the first valve core through the first elastic member.

[0021] As an optional solution, a guide groove is provided on one of the second valve core and the first valve core, and the first elastic member is provided in the guide groove; a guide rod is provided on the other of the second valve core and the first valve core, and the guide rod is slidably inserted in the guide groove and presses against the first elastic member.

[0022] As an optional solution, the one-way valve further includes:

[0023] A second elastic member, one end of which is sleeved on the second valve core and abuts against the mounting seat, and the other end of which abuts against the first valve core to apply elastic abutting pressure to the first valve core.

[0024] The water supply system comprises a cold water pipe and a hot water pipe, and also comprises the cold and hot water valves as described above, wherein the cold and hot water valves are connected to the cold water pipe and the hot water pipe to form a return water circuit in the water supply system.

[0025] Beneficial effects:

[0026] The hot and cold water valve proposed by the utility model is configured by coaxially arranging the first joint and the second joint, coaxially arranging the third joint and the fourth joint, and making the first water inlet and outlet always connected with the second water inlet and outlet to form the first channel, and making the fourth water inlet and outlet always connected with the third water inlet and outlet to form the second channel, so that the first channel and the second channel are both extended in a straight line, and are suitable for cold water pipes and hot water pipes arranged in a straight line. The first channel runs through the second channel without directly intersecting and connecting, so that the first channel and the second channel do not interfere with each other inside the valve body.

[0027] By setting a connecting hole on the channel wall where the second channel is located at the intersection of the first channel, the one-way valve only needs to block the connecting hole, and the connecting hole can be directly blocked by the valve core of the one-way valve, so the valve body structure of the one-way valve can be omitted. At the same time, there is no need for a sealed connection between the one-way valve and the inner wall of the valve body, and sealing structures such as sealing rings can be omitted. Therefore, the structure of the one-way valve can be greatly simplified, which is conducive to reducing the overall volume of the cold and hot water valves; at the same time, it is conducive to reducing leakage points and improving the anti-water cross-talk performance of the cold and hot water valves. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a hot and cold water valve provided by an embodiment of the utility model;

[0029] Figure 2 It is a cross-sectional structural schematic diagram of a hot and cold water valve provided by an embodiment of the utility model;

[0030] Figure 3 This is a partial cross-sectional view of the hot and cold water valve provided by the utility model. Figure 1 ;

[0031] Figure 4 This is a partial cross-sectional view of the hot and cold water valve provided by the utility model. Figure 2 .

[0032] In the figure:

[0033] 1. Valve body; 11. First joint; 111. First water inlet and outlet; 12. Second joint; 121. Second water inlet and outlet; 13. Third joint; 131. Third water inlet and outlet; 14. Fourth joint; 141. Fourth water inlet and outlet;

[0034] 2. Connecting pipe; 20. Water gap; 21. Connecting hole; 22. Boss;

[0035] 3. One-way valve; 30. Mounting groove; 31. Mounting seat; 32. First valve core; 321. Guide rod; 33. Second valve core; 331. Guide groove; 34. First elastic member; 35. Second elastic member;

[0036] 4. Filter. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0038] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0041] This embodiment provides a hot and cold water valve and a water supply system, which can be applied to the water supply system of a zero cold water water heater. The water supply system also includes a cold water pipe and a hot water pipe, and the hot and cold water valve is connected to the cold water pipe and the hot water pipe to form a return water path in the water supply system.

[0042] like Figure 1 and Figure 2 As shown, the hot and cold water valve includes a valve body 1, which includes a first joint 11, a second joint 12, a third joint 13 and a fourth joint 14. The first joint 11 and the second joint 12 are coaxially arranged, and the third joint 13 and the fourth joint 14 are coaxially arranged; the first joint 11 is provided with a first water inlet and outlet 111, the second joint 12 is provided with a second water inlet and outlet 121, the third joint 13 is provided with a third water inlet and outlet 131, and the fourth joint 14 is provided with a fourth water inlet and outlet 141. When applied to a water supply system, the first water inlet and outlet 111 is a cold water outlet, the fourth water inlet and outlet 141 is a hot water outlet, the second water inlet and outlet 121 is a cold water inlet, and the third water inlet and outlet 131 is a hot water inlet.

[0043] like Figure 2-Figure 4 As shown, the first water inlet and outlet 111 and the second water inlet and outlet 121 are always connected to form a first channel a, the fourth water inlet and outlet 141 and the third water inlet and outlet 131 are always connected to form a second channel b, the first channel a runs through the second channel b, and the first channel a and the second channel b do not directly intersect and connect. A connecting hole 21 is provided on the channel wall of the second channel b in the first channel a, and the connecting hole 21 is arranged toward the second water inlet and outlet 121. A one-way valve 3 is provided in the second joint 12, and the one-way valve 3 only allows the fluid to flow from the connecting hole 21 to the first channel a.

[0044] By arranging the first joint 11 and the second joint 12 coaxially, the third joint 13 and the fourth joint 14 coaxially, and making the first water inlet and outlet 111 and the second water inlet and outlet 121 always connected to form the first channel a, and the fourth water inlet and outlet 141 and the third water inlet and outlet 131 always connected to form the second channel b, the first channel a and the second channel b are both extended in a straight line, which is suitable for cold water pipes and hot water pipes arranged in a straight line. The first channel a runs through the second channel b and the two do not directly intersect and connect, so that the first channel a and the second channel b do not interfere with each other inside the valve body 1.

[0045] By setting the connecting hole 21 on the inner channel wall of the second channel b in the first channel a, the one-way valve 3 only needs to block the connecting hole 21, and the connecting hole 21 can be directly blocked by the valve core of the one-way valve 3, so the valve body structure of the one-way valve 3 can be omitted. At the same time, there is no need for a sealed connection between the one-way valve 3 and the inner wall of the valve body 1, and sealing structures such as a sealing ring can be omitted. Therefore, the structure of the one-way valve 3 can be greatly simplified, which is conducive to reducing the overall volume of the cold and hot water valve; at the same time, it is conducive to reducing leakage points and improving the anti-water cross-talk performance of the cold and hot water valve.

[0046] Alternatively, if Figure 3 and Figure 4 As shown, a connecting pipe 2 is provided in the first channel a, and the connecting pipe 2 connects the third joint 13 and the fourth joint 14 to form a second channel b. A connecting hole 21 is provided on the connecting pipe 2. A water gap 20 is maintained between at least one side of the connecting pipe 2 and the inner wall of the first channel a to prevent the connecting pipe 2 from blocking the first channel a.

[0047] Optionally, the connecting pipe 2 and the valve body 1 are an integrated structure, which can be processed by injection molding or casting, etc., which is convenient to process and has good structural strength.

[0048] In order to facilitate the cooperation with the one-way valve 3, a boss 22 is circumferentially arranged at one end of the communication hole 21 facing the second joint 12, and the boss 22 is used to abut against the one-way valve 3. When the one-way valve 3 abuts against the boss 22, the communication hole 21 will be blocked. Compared with the solution in which the one-way valve 3 abuts against the outer wall of the communication pipe 2 as a whole, this solution has a better abutment and sealing effect.

[0049] Optionally, a filter 4 is provided in the third joint 13, and the filter 4 is used to filter the fluid entering the valve body 1 from the third water inlet and outlet 131. The filter 4 can be a filter net, and of course it can also be a filter in other forms. It is understandable that, according to needs, the filter 4 can also be installed in the first joint 11, the second joint 12 or the fourth joint 14, and this is not limited here.

[0050] When the fluid velocity entering the second connector 12 is too fast, the pressure on the one-way valve 3 is reduced, which may cause the one-way valve 3 to be sucked open by negative pressure. To solve this problem, the structure of the one-way valve 3 is improved in this embodiment. Specifically, Figure 2 and Figure 4As shown, the one-way valve 3 includes a mounting seat 31, a first valve core 32 and a second valve core 33. The mounting seat 31 is arranged in the valve body 1. The first valve core 32 is elastically arranged in the mounting seat 31, and the first valve core 32 elastically abuts against the boss 22 to selectively block the connecting hole 21. The second valve core 33 is slidably arranged in the mounting seat 31, and the second valve core 33 is located on the side of the first valve core 32 away from the boss 22. A first elastic member 34 is arranged between the second valve core 33 and the first valve core 32. When the second valve core 33 is pushed by the fluid entering from the second water inlet and outlet 121, the first elastic member 34 applies a thrust to the first valve core 32. Specifically, the first elastic member 34 can be a spring.

[0051] By setting the first valve core 32 to elastically abut against the boss 22, when there is no water flow in the second channel b, the first valve core 32 blocks the connecting hole 21. When water flows in the second channel b, the first valve core 32 will be pressed against the second joint 12, so that the first valve core 32 can be flushed open, so that the water flow in the second channel b enters the first channel a for mixing. By setting the second valve core 33, the second valve core 33 applies pressure to the first valve core 32 through the first elastic member 34, increasing the abutment pressure of the first valve core 32 on the boss 22, thereby improving the ability of the first valve core 32 to resist negative pressure.

[0052] In order to realize the elastic installation between the first valve core 32 and the mounting seat 31, the one-way valve 3 also includes a second elastic member 35, one end of which is sleeved on the second valve core 33 and abuts against the mounting seat 31, and the other end of the second elastic member 35 abuts against the first valve core 32 to apply elastic abutting force to the first valve core 32. Among them, the first valve core 32 and the mounting seat 31 are both provided with a mounting groove 30, and the two ends of the first elastic member 34 are respectively provided in the mounting grooves 30 on the first valve core 32 and the mounting seat 31, so that the first elastic member 34 is installed stably to avoid skewing and affecting the reliability of the one-way valve 3. Specifically, the second elastic member 35 can be a spring.

[0053] In order to facilitate the installation of the first elastic member 34, a guide groove 331 is provided on one of the second valve core 33 and the first valve core 32, and the first elastic member 34 is disposed in the guide groove 331. A guide rod 321 is provided on the other of the second valve core 33 and the first valve core 32, and the guide rod 321 is slidably inserted in the guide groove 331 and presses the first elastic member 34. In this embodiment, the second valve core 33 is provided with the guide groove 331, and the first valve core 32 is provided with the guide rod 321.

[0054] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Hot and cold water valve, characterized in that: include: A valve body (1), the valve body (1) comprising a first joint (11), a second joint (12), a third joint (13) and a fourth joint (14), the first joint (11) and the second joint (12) being coaxially arranged, the third joint (13) and the fourth joint (14) being coaxially arranged; the first joint (11) being provided with a first water inlet and outlet (111), the second joint (12) being provided with a second water inlet and outlet (121), the third joint (13) being provided with a There is a third water inlet and outlet (131), the fourth joint (14) is provided with a fourth water inlet and outlet (141), the first water inlet and outlet (111) and the second water inlet and outlet (121) are always connected to form a first channel (a), the fourth water inlet and outlet (141) and the third water inlet and outlet (131) are always connected to form a second channel (b), the first channel (a) runs through the second channel (b), and the first channel (a) and the second channel (b) do not directly intersect and communicate; A communication hole (21) is provided on a channel wall of the second channel (b) located inside the first channel (a), and the communication hole (21) is arranged toward the second water inlet and outlet (121); A one-way valve (3) is arranged in the second joint (12), and the one-way valve (3) only allows fluid to flow from the connecting hole (21) to the first channel (a).

2. The hot and cold water valve according to claim 1, characterized in that: A boss (22) is circumferentially arranged at one end of the communication hole (21) facing the second joint (12), and the boss (22) is used to abut against the one-way valve (3).

3. The hot and cold water valve according to claim 1, characterized in that: A connecting pipe (2) is provided in the first channel (a), and the connecting pipe (2) connects the third joint (13) and the fourth joint (14) to form the second channel (b).

4. The hot and cold water valve according to claim 3, characterized in that: The connecting pipe (2) and the valve body (1) are an integrated structure.

5. The hot and cold water valve according to claim 3, characterized in that: The communicating hole (21) is arranged on the communicating pipe (2).

6. The hot and cold water valve according to any one of claims 1 to 5, characterized in that: A filter (4) is arranged inside the third joint (13), and the filter (4) is used to filter the fluid entering the valve body (1) from the third water inlet and outlet (131).

7. The hot and cold water valve according to claim 2, characterized in that: The one-way valve (3) comprises: A mounting seat (31) is arranged in the valve body (1); A first valve core (32) is elastically arranged on the mounting seat (31), and the first valve core (32) elastically abuts against the boss (22) to selectively block the communication hole (21); A second valve core (33) is slidably disposed in the mounting seat (31); the second valve core (33) is located on a side of the first valve core (32) that is away from the boss (22); a first elastic member (34) is disposed between the second valve core (33) and the first valve core (32); when the second valve core (33) is pushed by the fluid entering from the second water inlet and outlet (121), a thrust is applied to the first valve core (32) through the first elastic member (34).

8. The hot and cold water valve according to claim 7, characterized in that: A guide groove (331) is provided on one of the second valve core (33) and the first valve core (32), and the first elastic member (34) is arranged in the guide groove (331); a guide rod (321) is provided on the other of the second valve core (33) and the first valve core (32), and the guide rod (321) is slidably inserted in the guide groove (331) and presses against the first elastic member (34).

9. The hot and cold water valve according to claim 7, characterized in that: The one-way valve (3) further comprises: A second elastic member (35), one end of the second elastic member (35) is sleeved on the second valve core (33) and abuts against the mounting seat (31), and the other end of the second elastic member (35) abuts against the first valve core (32) to apply elastic abutting pressure to the first valve core (32).

10. A water supply system, comprising a cold water pipe and a hot water pipe, characterized in that: Also includes claims 1-9 The hot and cold water valve described in any one of the above is connected to the cold water pipe and the hot water pipe. So as to form a return water channel in the water supply system.

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